How to Clean SolidWorks Temporary Scratch Files & Crash Backup Files
Location & Quick Verdict
%LocalAppData%\SolidWorks\SolidWorks Temp
Dassault Systèmes SolidWorks leaves behind massive CAD scratch buffers, auto-recover backups, and visualization files.
How Windows Manages SolidWorks Temporary Scratch Files & Crash Backup Files on NTFS & NVMe Drives
Windows 10 and Windows 11 maintain hidden system directories and root-level allocation files at %LocalAppData%\SolidWorks\SolidWorks Temp to handle shell thumbnail databases, prefetcher launch traces, hibernation power states, and user-profile scratch storage. Because many of these paths are marked with +H (Hidden) or +S (System) attributes or guarded by SYSTEM ACL permissions, standard folder size scans often miss them entirely.
Over time, orphaned temporary files, stale Explorer DataCache_* buckets, and uncompacted virtual storage allocations inside %LocalAppData%\SolidWorks\SolidWorks Temp lock up 3.0 GB – 25.0 GB of primary C: drive space. Cleaning SolidWorks Temporary Scratch Files & Crash Backup Files using the proper administrative method restores drive headroom safely.
# Inspect current disk footprint of SolidWorks Temporary Scratch Files & Crash Backup Files (Read-Only)
$target = "$env:LOCALAPPDATA\SolidWorks\SolidWorks Temp"
Get-ChildItem -Path $target -Recurse -Force -ErrorAction SilentlyContinue |
Measure-Object -Property Length -Sum |
Select-Object Count, @{Name="SizeGB";Expression={[math]::Round($_.Sum / 1GB, 2)}}
Manual Cleaning Instructions
- 1 Save and close all SolidWorks projects.
- 2 Press Windows Key + R, type %LocalAppData%\SolidWorks, and delete the Temp folders.
Note: If Windows alerts that a file is in use or locked by a background process, close the associated task in Task Manager before deleting, or use SWEEPR Cleaner to release locked handles safely.
Sub-Folders & Cache Locations Breakdown for SolidWorks Temporary Scratch Files & Crash Backup Files
Modern Windows applications and system services split their disk footprint across multiple sub-directories (`Cache_Data`, `Service Worker\CacheStorage`, `Code Cache`, `GPUCache`, and `Crashpad\reports`). Review which sub-folders inside SolidWorks Temporary Scratch Files & Crash Backup Files are safe to purge and which files remain protected:
| Sub-Folder / Cache Location | Storage Role | Typical Footprint | Deletion Safety |
|---|---|---|---|
| %LocalAppData%\SolidWorks\SolidWorks Temp | Primary System Scratch, Thumbnail/Icon DB or Virtual Allocation | 3.0 GB – 25.0 GB | 🟢 100% Safe (Unlocked Files) |
| %LocalAppData%\Temp & C:\Windows\Temp | Orphaned Installer Extraction & Session Scratch Files | 1.5 GB – 18.0 GB | 🟢 100% Safe |
| %LocalAppData%\Microsoft\Windows\Explorer (thumbcache_*.db) | Cached File Explorer Image & Video Thumbnail Databases | 250 MB – 3.0 GB | 🟢 100% Safe (Rebuilds Automatically) |
| User Documents, Desktop & Registry Hives | Personal Files, Boot Configuration & System Certificates | Protected | 🔒 Protected — Never Touched |
Frequently Asked Questions
Is it safe to delete SolidWorks Temporary Scratch Files & Crash Backup Files?
Yes, 100% safe. Safely cleans orphaned CAD temp files without altering your native .sldprt or .sldasm assembly models.
How much storage space will cleaning SolidWorks Temporary Scratch Files & Crash Backup Files free up?
Users typically reclaim 3.0 GB – 25.0 GB on Windows 10 and Windows 11 systems depending on update frequency and active cache retention in %LocalAppData%\SolidWorks\SolidWorks Temp.
Why does Windows say some files in SolidWorks Temporary Scratch Files & Crash Backup Files are "In Use" when I try to delete them?
Active background processes (such as explorer.exe, svchost.exe, or running desktop apps) hold open file handles to current session scratch files. Skipping locked files—or letting SWEEPR Cleaner clean unlocked items automatically—is normal and completely safe.
Where is SolidWorks Temporary Scratch Files & Crash Backup Files located on Windows 10 and Windows 11?
It is stored at %LocalAppData%\SolidWorks\SolidWorks Temp. You can paste that path directly into the Windows Run dialog (Win + R) or File Explorer address bar to inspect it.
Manual File Explorer vs. 1-Click SWEEPR Cleanup
| Feature | Manual Deletion | SWEEPR Cleaner |
|---|---|---|
| Locked File Handling | Fails on locked processes | Safe background release |
| Accidental Deletion Risk | Moderate (easy to delete wrong folder) | Zero (strict rules & hashes) |
| Safety Undo Rollback | None (Shift+Del is permanent) | 7-Day Automatic Rollback |
| Time Required | 10–20 minutes per app | < 60 seconds across 40+ areas |
Related Windows Cleanup Guides & Hidden Space Hogs
Clean SolidWorks Temporary Scratch Files & Crash Backup Files Automatically
SWEEPR Cleaner safely clears SolidWorks Temporary Scratch Files & Crash Backup Files along with 40+ other hidden app folders and leftover files in one click—covering up to 5 devices (Windows, Mac, Android & iOS) with a 7-day undo safety net.